Acromicric dysplasia
Last updated 18 Aug 2020
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Acromicric dysplasia is a condition characterised by severely short stature, short limbs, stiff joints, and distinctive facial features.
Description
Acromicric dysplasia is a condition characterised by severely short stature, short limbs, stiff joints, and distinctive facial features.
Newborns with acromicric dysplasia are of normal size, but slow growth over time results in short stature. The average height of adults with this disorder is about 4 feet, 2 inches for women and 4 feet, 5 inches for men. The long bones of the arms and legs, and the bones in the hands and feet, are shorter than would be expected for the individual's height. Other skeletal features that occur in this disorder include slowed mineralization of bone (delayed bone age), abnormally shaped bones of the spine (vertebrae), and constrained movement of joints. Affected individuals often develop carpal tunnel syndrome, which is characterised by numbness, tingling, and weakness in the hands and fingers. A misalignment of the hip joints (hip dysplasia) can also occur in this disorder. These skeletal and joint problems may require treatment, but most affected individuals have few limitations in their activities.
Children with acromicric dysplasia may have a round face, sharply defined eyebrows, long eyelashes, a bulbous nose with upturned nostrils, a long space between the nose and upper lip (long philtrum), and a small mouth with thick lips. These facial differences become less apparent in adulthood. Intelligence is unaffected in this disorder, and life expectancy is generally normal.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant. More than one pattern can apply in different cases.
Related genes
Other names
ACMICD
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Further reading and references
- Acromicric dysplasia; MedlinePlus, National Library of Medicine.
- Faivre L, Le Merrer M, Baumann C, Polak M, Chatelain P, Sulmont V, Cousin J, Bost M, Cordier MP, Zackai E, Russell K, Finidori G, Pouliquen JC, Munnich A, Maroteaux P, Cormier-Daire V. Acromicric dysplasia: long term outcome and evidence of autosomal dominant inheritance. J Med Genet. 2001 Nov;38(11):745-9. doi: 10.1136/jmg.38.11.745.
- Klein C, Le Goff C, Topouchian V, Odent S, Violas P, Glorion C, Cormier-Daire V. Orthopedics management of acromicric dysplasia: follow up of nine patients. Am J Med Genet A. 2014 Feb;164A(2):331-7. doi: 10.1002/ajmg.a.36139. Epub 2013 Dec 11.
- Le Goff C, Mahaut C, Wang LW, Allali S, Abhyankar A, Jensen S, Zylberberg L, Collod-Beroud G, Bonnet D, Alanay Y, Brady AF, Cordier MP, Devriendt K, Genevieve D, Kiper PO, Kitoh H, Krakow D, Lynch SA, Le Merrer M, Megarbane A, Mortier G, Odent S, Polak M, Rohrbach M, Sillence D, Stolte-Dijkstra I, Superti-Furga A, Rimoin DL, Topouchian V, Unger S, Zabel B, Bole-Feysot C, Nitschke P, Handford P, Casanova JL, Boileau C, Apte SS, Munnich A, Cormier-Daire V. Mutations in the TGFbeta binding-protein-like domain 5 of FBN1 are responsible for acromicric and geleophysic dysplasias. Am J Hum Genet. 2011 Jul 15;89(1):7-14. doi: 10.1016/j.ajhg.2011.05.012. Epub 2011 Jun 16.
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